Edge and Centroid Relationship

It is a measure as the distance between the perpendicular projections of lower incisor edge and centroid of upper incisor root on maxillary plane.

What is Edge in Edge Centroid relationship: The tip of the crown most prominent lower incisor

What is Cnetroid in Edge Centroid relationship: The Mid-Point on root axis of most prominent upper incisor

For stable occlusion the lower incisor edge should 2mm in front of the centroid of the upper incisor. But when the Lower incisor Centroid is behind the upper incisor centroid it should be corrected to get Stable Occlusion.

Interincisal Angle is decreased because of protrusion of maxillary incisors

Lower incisor edge lies in line with or behind the upper incisor centroid

Class II Div 2:

Interincisal Angle is increased

Lower incisor angle lies behind the upper incisor Centroid

Treatment of Abnormal Incisor Edge-Centroid Relationship:

Treatment or Correction of Edge-Centroid Relationship is done with the help of Removable or Fixed appliances depending on the severity of the case.

Mild cases are treated with Removable appliances

Severe cases are treated with Fixed appliances

Mild Cases: Upper Anterior Bite planes are used in correcting mild Edge-Centroid discrepancies. Another easy way is to Extract Premoalrs and Retract the upper incisors to establish normal Edge-Centroid relationship.

About Author

I am Varun, a Dentist from Hyderabad, India trying my bit to help everyone understand Dental problems and treatments and to make Dental Education simplified for Dental Students and Dental fraternity.
If you have any doubts feel free to contact me or comment in the post, thanks for visiting.

Welcome to Juniordentist

I am Varun, a Dentist from Hyderabad, India trying my bit to help everyone understand Dental problems and treatments and to make Dental Education simplified for Dental Students and Dental fraternity.
If you have any doubts feel free to contact me or comment in the post, thanks for visiting.

Disclaimer

Juniordentist.com is intended for educational, informative and entertainment purposes only. It is not intended to replace your Dental Visit. Only a proper dental Checkup by a professional in person can help diagnose the problem you are suffering from and help give you the required treatment. You should always understand that a Patient to Doctor interaction is the only way to properly diagnose the problem and decide its cure.